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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.74 by root, Wed Oct 25 17:57:30 2006 UTC vs.
Revision 1.162 by root, Sun Jan 10 23:05:12 2010 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
26	#include <limits.h>	17	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	18	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	19	#include <sched.h>
31		20
32	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
33	# if __linux
34	# include <sys/sendfile.h>	22	# include <sys/mman.h>
35	# elif __freebsd	23	#endif
36	# include <sys/socket.h>	24
		25	#if !_POSIX_MAPPED_FILES
		26	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		27	# define munmap(addr,length) (errno = ENOSYS, -1)
		28	#endif
		29
		30	/* perl namespace pollution */
		31	#undef VERSION
		32
		33	#ifdef _WIN32
		34
		35	# define EIO_STRUCT_DIRENT Direntry_t
		36	# undef malloc
		37	# undef free
		38
		39	// perl overrides all those nice win32 functions
		40	# undef open
		41	# undef read
		42	# undef write
		43	# undef send
		44	# undef recv
		45	# undef stat
		46	# undef fstat
		47	# define lstat stat
		48	# undef truncate
		49	# undef ftruncate
		50	# undef open
		51	# undef close
		52	# undef unlink
		53	# undef rmdir
		54	# undef rename
		55	# undef lseek
		56
		57	# define chown(a,b,c) (errno = ENOSYS, -1)
		58	# define fchown(a,b,c) (errno = ENOSYS, -1)
		59	# define fchmod(a,b) (errno = ENOSYS, -1)
		60	# define symlink(a,b) (errno = ENOSYS, -1)
		61	# define readlink(a,b,c) (errno = ENOSYS, -1)
		62	# define mknod(a,b,c) (errno = ENOSYS, -1)
		63	# define truncate(a,b) (errno = ENOSYS, -1)
		64	# define ftruncate(fd,o) chsize ((fd), (o))
		65	# define fsync(fd) _commit (fd)
		66	# define opendir(fd) (errno = ENOSYS, 0)
		67	# define readdir(fd) (errno = ENOSYS, -1)
		68	# define closedir(fd) (errno = ENOSYS, -1)
		69	# define mkdir(a,b) mkdir (a)
		70
		71	#else
		72
37	# include <sys/uio.h>	73	# include <sys/time.h>
38	# elif __hpux
39	# include <sys/socket.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	74	# include <sys/select.h>
		75	# include <unistd.h>
		76	# include <utime.h>
		77	# include <signal.h>
		78	# define EIO_STRUCT_DIRENT struct dirent
		79
		80	#endif
		81
		82	/* perl stupidly overrides readdir and maybe others */
		83	/* with thread-unsafe versions, imagine that :( */
		84	#undef readdir
		85	#undef opendir
		86	#undef closedir
		87
		88	#define EIO_STRUCT_STAT Stat_t
		89
		90	/* use NV for 32 bit perls as it allows larger offsets */
		91	#if IVSIZE >= 8
		92	# define VAL64 IV
		93	# define SvVAL64 SvIV
		94	# define newSVval64 newSViv
		95	#else
		96	# define VAL64 NV
		97	# define SvVAL64 SvNV
		98	# define newSVval64 newSVnv
		99	#endif
		100
		101	/*****************************************************************************/
		102
		103	#if __GNUC__ >= 3
		104	# define expect(expr,value) __builtin_expect ((expr),(value))
		105	#else
		106	# define expect(expr,value) (expr)
		107	#endif
		108
		109	#define expect_false(expr) expect ((expr) != 0, 0)
		110	#define expect_true(expr) expect ((expr) != 0, 1)
		111
		112	/*****************************************************************************/
		113
		114	typedef SV SV8; /* byte-sv, used for argument-checking */
		115	typedef int aio_rfd; /* read file desriptor */
		116	typedef int aio_wfd; /* write file descriptor */
		117
		118	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		119
		120	#define EIO_REQ_MEMBERS \
		121	SV *callback; \
		122	SV *sv1, *sv2; \
		123	STRLEN stroffset; \
		124	SV *self;
		125
		126	#define EIO_NO_WRAPPERS 1
		127
		128	#include "libeio/eio.h"
		129
		130	#ifndef POSIX_FADV_NORMAL
		131	# define POSIX_FADV_NORMAL 0
		132	# define NO_FADVISE 1
		133	#endif
		134	#ifndef POSIX_FADV_SEQUENTIAL
		135	# define POSIX_FADV_SEQUENTIAL 0
		136	#endif
		137	#ifndef POSIX_FADV_RANDOM
		138	# define POSIX_FADV_RANDOM 0
		139	#endif
		140	#ifndef POSIX_FADV_NOREUSE
		141	# define POSIX_FADV_NOREUSE 0
		142	#endif
		143	#ifndef POSIX_FADV_WILLNEED
		144	# define POSIX_FADV_WILLNEED 0
		145	#endif
		146	#ifndef POSIX_FADV_DONTNEED
		147	# define POSIX_FADV_DONTNEED 0
		148	#endif
		149
		150	#ifndef ST_NODEV
		151	# define ST_NODEV 0
		152	#endif
		153	#ifndef ST_NOEXEC
		154	# define ST_NOEXEC 0
		155	#endif
		156	#ifndef ST_SYNCHRONOUS
		157	# define ST_SYNCHRONOUS 0
		158	#endif
		159	#ifndef ST_MANDLOCK
		160	# define ST_MANDLOCK 0
		161	#endif
		162	#ifndef ST_WRITE
		163	# define ST_WRITE 0
		164	#endif
		165	#ifndef ST_APPEND
		166	# define ST_APPEND 0
		167	#endif
		168	#ifndef ST_IMMUTABLE
		169	# define ST_IMMUTABLE 0
		170	#endif
		171	#ifndef ST_NOATIME
		172	# define ST_NOATIME 0
		173	#endif
		174	#ifndef ST_NODIRATIME
		175	# define ST_NODIRATIME 0
		176	#endif
		177	#ifndef ST_RELATIME
		178	# define ST_RELATIME 0
		179	#endif
		180
		181	#ifndef MCL_CURRENT
		182	# define MCL_CURRENT 0
		183	#endif
		184	#ifndef MCL_FUTURE
		185	# define MCL_FUTURE 0
		186	#endif
		187
		188	#ifndef MAP_ANONYMOUS
		189	# ifdef MAP_ANON
		190	# define MAP_ANONYMOUS MAP_ANON
42	# else	191	# else
43	# error sendfile support requested but not available	192	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	193	# endif
45	#endif	194	#endif
46		195	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	196	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	197	#endif
51		198	#ifndef MAP_LOCKED
52	#if __ia64	199	# define MAP_LOCKED 0
53	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN
56	#else
57	# define STACKSIZE 16384
58	#endif	200	#endif
		201	#ifndef MAP_NORESERVE
		202	# define MAP_NORESERVE 0
		203	#endif
		204	#ifndef MAP_POPULATE
		205	# define MAP_POPULATE 0
		206	#endif
		207	#ifndef MAP_NONBLOCK
		208	# define MAP_NONBLOCK 0
		209	#endif
59		210
60	/* buffer size for various temporary buffers */	211	#ifndef PAGESIZE
61	#define AIO_BUFSIZE 65536	212	# define PAGESIZE sysconf (_SC_PAGESIZE)
		213	#endif
62		214
63	#define dBUF \	215	static int req_invoke (eio_req *req);
64	char *aio_buf; \	216	#define EIO_FINISH(req) req_invoke (req)
65	LOCK (wrklock); \	217	static void req_destroy (eio_req *grp);
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	218	#define EIO_DESTROY(req) req_destroy (req)
67	UNLOCK (wrklock); \
68	if (!aio_buf) \
69	return -1;
70		219
71	enum {	220	enum {
72	REQ_QUIT,	221	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
73	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
75	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79	REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};	222	};
84		223
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	224	#include "libeio/eio.c"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		225
88	typedef struct aio_cb
89	{
90	struct aio_cb *volatile next;
91
92	SV *data, *callback;
93	SV *fh, *fh2;
94	void *dataptr, *data2ptr;
95	Stat_t *statdata;
96	off_t offset;
97	size_t length;
98	ssize_t result;
99
100	STRLEN dataoffset;
101	int type;
102	int fd, fd2;
103	int errorno;
104	mode_t mode; /* open */
105
106	unsigned char flags;
107	unsigned char pri;
108
109	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;
112
113	enum {
114	FLAG_CANCELLED = 0x01,
115	};
116
117	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
119		228
120	enum {	229	static SV *on_next_submit;
121	PRI_MIN = -4,	230	static int next_pri = EIO_PRI_DEFAULT;
122	PRI_MAX = 4,	231	static int max_outstanding;
123		232
124	DEFAULT_PRI = 0,	233	static s_epipe respipe;
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128		234
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int respipe [2];
134
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
139	#endif
140
141	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
142	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
143
144	/* worker threasd management */
145	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
146
147	typedef struct worker {
148	/* locked by wrklock */
149	struct worker *prev, *next;
150
151	pthread_t tid;
152
153	/* locked by reslock, reqlock or wrklock */
154	aio_req req; /* currently processed request */
155	void *dbuf;
156	DIR *dirp;
157	} worker;
158
159	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
160
161	static void worker_clear (worker *wrk)
162	{
163	if (wrk->dirp)
164	{
165	closedir (wrk->dirp);
166	wrk->dirp = 0;
167	}
168
169	if (wrk->dbuf)
170	{
171	free (wrk->dbuf);
172	wrk->dbuf = 0;
173	}
174	}
175
176	static void worker_free (worker *wrk)
177	{
178	wrk->next->prev = wrk->prev;
179	wrk->prev->next = wrk->next;
180
181	free (wrk);
182	}
183
184	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
185	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
186	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
187
188	/*
189	* a somewhat faster data structure might be nice, but
190	* with 8 priorities this actually needs <20 insns
191	* per shift, the most expensive operation.
192	*/
193	typedef struct {
194	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
195	int size;
196	} reqq;
197
198	static reqq req_queue;
199	static reqq res_queue;
200
201	int reqq_push (reqq *q, aio_req req)
202	{
203	int pri = req->pri;
204	req->next = 0;
205
206	if (q->qe[pri])
207	{
208	q->qe[pri]->next = req;
209	q->qe[pri] = req;
210	}
211	else
212	q->qe[pri] = q->qs[pri] = req;
213
214	return q->size++;
215	}
216
217	aio_req reqq_shift (reqq *q)
218	{
219	int pri;
220
221	if (!q->size)
222	return 0;
223
224	--q->size;
225
226	for (pri = NUM_PRI; pri--; )
227	{
228	aio_req req = q->qs[pri];
229
230	if (req)
231	{
232	if (!(q->qs[pri] = req->next))
233	q->qe[pri] = 0;
234
235	return req;
236	}
237	}
238
239	abort ();
240	}
241
242	static int poll_cb ();
243	static void req_invoke (aio_req req);
244	static void req_free (aio_req req);	235	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	236	static void req_cancel (aio_req req);
246		237
		238	static void want_poll (void)
		239	{
		240	/* write a dummy byte to the pipe so fh becomes ready */
		241	s_epipe_signal (&respipe);
		242	}
		243
		244	static void done_poll (void)
		245	{
		246	/* read any signals sent by the worker threads */
		247	s_epipe_drain (&respipe);
		248	}
		249
247	/* must be called at most once */	250	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	251	static SV *req_sv (aio_req req, HV *stash)
249	{	252	{
250	if (!req->self)	253	if (!req->self)
251	{	254	{
252	req->self = (SV *)newHV ();	255	req->self = (SV *)newHV ();
253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	256	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254	}	257	}
255		258
256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	259	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257	}	260	}
258		261
259	static aio_req SvAIO_REQ (SV *sv)	262	static aio_req SvAIO_REQ (SV *sv)
260	{	263	{
261	MAGIC *mg;	264	MAGIC *mg;
262		265
263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	266	if (!SvROK (sv)
		267	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		268	&& SvSTASH (SvRV (sv)) != aio_req_stash
		269	&& !sv_derived_from (sv, "IO::AIO::REQ")))
264	croak ("object of class " AIO_REQ_KLASS " expected");	270	croak ("object of class IO::AIO::REQ expected");
265		271
266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	272	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267		273
268	return mg ? (aio_req)mg->mg_ptr : 0;	274	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	275	}
270		276
271	static void aio_grp_feed (aio_req grp)	277	static void aio_grp_feed (aio_req grp)
272	{	278	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	279	if (grp->sv2 && SvOK (grp->sv2))
274	{	280	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	281	dSP;
280		282
281	ENTER;	283	ENTER;
282	SAVETMPS;	284	SAVETMPS;
283	PUSHMARK (SP);	285	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	286	XPUSHs (req_sv (grp, aio_grp_stash));
285	PUTBACK;	287	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	288	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	289	SPAGAIN;
288	FREETMPS;	290	FREETMPS;
289	LEAVE;	291	LEAVE;
290	}
291
292	/* stop if no progress has been made */
293	if (old_len == grp->length)
294	{
295	SvREFCNT_dec (grp->fh2);
296	grp->fh2 = 0;
297	break;
298	}
299	}	292	}
300	}	293	}
301		294
302	static void aio_grp_dec (aio_req grp)	295	static void req_submit (eio_req *req)
303	{	296	{
304	--grp->length;	297	eio_submit (req);
305		298
306	/* call feeder, if applicable */	299	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	300	{
312	req_invoke (grp);	301	dSP;
313	req_free (grp);	302	SV *cb = sv_2mortal (on_next_submit);
		303
		304	on_next_submit = 0;
		305
		306	PUSHMARK (SP);
		307	PUTBACK;
		308	call_sv (cb, G_DISCARD | G_EVAL);
314	}	309	}
315	}	310	}
316		311
317	static void poll_wait ()	312	static int req_invoke (eio_req *req)
318	{	313	{
319	fd_set rfd;	314	dSP;
320		315
321	while (nreqs)	316	if (req->flags & FLAG_SV2_RO_OFF)
		317	SvREADONLY_off (req->sv2);
		318
		319	if (!EIO_CANCELLED (req) && req->callback)
322	{	320	{
323	int size;
324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325	LOCK (reslock);
326	#endif
327	size = res_queue.size;
328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329	UNLOCK (reslock);
330	#endif
331
332	if (size)
333	return;
334
335	FD_ZERO(&rfd);
336	FD_SET(respipe [0], &rfd);
337
338	select (respipe [0] + 1, &rfd, 0, 0, 0);
339	}
340	}
341
342	static void req_invoke (aio_req req)
343	{
344	dSP;
345
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
347	{
348	errno = req->errorno;
349
350	ENTER;	321	ENTER;
351	SAVETMPS;	322	SAVETMPS;
352	PUSHMARK (SP);	323	PUSHMARK (SP);
353	EXTEND (SP, 1);	324	EXTEND (SP, 1);
354		325
355	switch (req->type)	326	switch (req->type)
356	{	327	{
357	case REQ_READDIR:	328	case EIO_READDIR:
358	{	329	{
359	SV *rv = &PL_sv_undef;	330	SV *rv = &PL_sv_undef;
360		331
361	if (req->result >= 0)	332	if (req->result >= 0)
362	{	333	{
363	int i;	334	int i;
364	char *buf = req->data2ptr;	335	char *names = (char *)req->ptr2;
		336	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	337	AV *av = newAV ();
366		338
367	av_extend (av, req->result - 1);	339	av_extend (av, req->result - 1);
368		340
369	for (i = 0; i < req->result; ++i)	341	for (i = 0; i < req->result; ++i)
370	{	342	{
371	SV *sv = newSVpv (buf, 0);	343	if (req->int1 & EIO_READDIR_DENTS)
		344	{
		345	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		346
		347	if (req->int1 & EIO_READDIR_CUSTOM2)
		348	{
		349	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		350	AV *avent = newAV ();
		351
		352	av_extend (avent, 2);
		353
		354	if (!sv_type [ent->type])
		355	{
		356	sv_type [ent->type] = newSViv (ent->type);
		357	SvREADONLY_on (sv_type [ent->type]);
		358	}
		359
		360	av_store (avent, 0, namesv);
		361	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		362	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		363
		364	av_store (av, i, newRV_noinc ((SV *)avent));
		365	}
		366	else
373	av_store (av, i, sv);	367	av_store (av, i, namesv);
		368
		369	++ent;
		370	}
		371	else
		372	{
		373	SV *name = newSVpv (names, 0);
		374	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	375	names += SvCUR (name) + 1;
		376	}
375	}	377	}
376		378
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	379	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	380	}
379		381
380	PUSHs (rv);	382	PUSHs (rv);
		383
		384	if (req->int1 & EIO_READDIR_CUSTOM1)
		385	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381	}	386	}
382	break;	387	break;
383		388
384	case REQ_OPEN:	389	case EIO_OPEN:
385	{	390	{
386	/* convert fd to fh */	391	/* convert fd to fh */
387	SV *fh;	392	SV *fh = &PL_sv_undef;
388		393
389	PUSHs (sv_2mortal (newSViv (req->result)));	394	if (req->result >= 0)
390	PUTBACK;	395	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	396	GV *gv = (GV *)sv_newmortal ();
392	SPAGAIN;	397	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		398	char sym [64];
		399	int symlen;
		400
		401	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		402	gv_init (gv, aio_stash, sym, symlen, 0);
393		403
394	fh = SvREFCNT_inc (POPs);	404	symlen = snprintf (
		405	sym,
		406	sizeof (sym),
		407	"%s&=%d",
		408	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		409	(int)req->result
		410	);
395		411
		412	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		413	fh = (SV *)gv;
		414	}
		415
396	PUSHMARK (SP);	416	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	417	}
399	break;	418	break;
400		419
		420	case EIO_STATVFS:
		421	case EIO_FSTATVFS:
		422	{
		423	SV *rv = &PL_sv_undef;
		424
		425	if (req->result >= 0)
		426	{
		427	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		428	HV *hv = newHV ();
		429
		430	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		431
		432	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		433	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		434	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		435	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		436	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		437	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		438	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		439	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		440	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		441	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		442	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		443	}
		444
		445	PUSHs (rv);
		446	}
		447
		448	break;
		449
401	case REQ_GROUP:	450	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	451	req->int1 = 2; /* mark group as finished */
403		452
404	if (req->data)	453	if (req->sv1)
405	{	454	{
406	int i;	455	int i;
407	AV *av = (AV *)req->data;	456	AV *av = (AV *)req->sv1;
408		457
409	EXTEND (SP, AvFILL (av) + 1);	458	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	459	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	460	PUSHs (*av_fetch (av, i, 0));
412	}	461	}
413	break;	462	break;
414		463
415	case REQ_NOP:	464	case EIO_NOP:
416	case REQ_BUSY:	465	case EIO_BUSY:
417	break;	466	break;
		467
		468	case EIO_READLINK:
		469	if (req->result > 0)
		470	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		471	break;
		472
		473	case EIO_STAT:
		474	case EIO_LSTAT:
		475	case EIO_FSTAT:
		476	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		477	PL_laststatval = req->result;
		478	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		479	PUSHs (sv_2mortal (newSViv (req->result)));
		480	break;
		481
		482	case EIO_READ:
		483	{
		484	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		485	*SvEND (req->sv2) = 0;
		486	SvPOK_only (req->sv2);
		487	SvSETMAGIC (req->sv2);
		488	PUSHs (sv_2mortal (newSViv (req->result)));
		489	}
		490	break;
		491
		492	case EIO_DUP2:
		493	if (req->result > 0)
		494	req->result = 0;
		495	/* FALLTHROUGH */
418		496
419	default:	497	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	498	PUSHs (sv_2mortal (newSViv (req->result)));
421	break;	499	break;
422	}	500	}
423		501
		502	errno = req->errorno;
424		503
425	PUTBACK;	504	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	505	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	506	SPAGAIN;
428		507
429	FREETMPS;	508	FREETMPS;
430	LEAVE;	509	LEAVE;
		510
		511	PUTBACK;
431	}	512	}
432		513
433	if (req->grp)	514	return !!SvTRUE (ERRSV);
434	{
435	aio_req grp = req->grp;
436
437	/* unlink request */
438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
440
441	if (grp->grp_first == req)
442	grp->grp_first = req->grp_next;
443
444	aio_grp_dec (grp);
445	}
446
447	if (SvTRUE (ERRSV))
448	{
449	req_free (req);
450	croak (0);
451	}
452	}	515	}
453		516
454	static void req_free (aio_req req)	517	static void req_destroy (aio_req req)
455	{	518	{
456	if (req->self)	519	if (req->self)
457	{	520	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	521	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	522	SvREFCNT_dec (req->self);
460	}	523	}
461		524
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	525	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	526	SvREFCNT_dec (req->sv2);
465	SvREFCNT_dec (req->callback);	527	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470		528
471	Safefree (req);	529	Safefree (req);
472	}	530	}
473		531
474	static void req_cancel_subs (aio_req grp)	532	static void req_cancel_subs (aio_req grp)
475	{	533	{
476	aio_req sub;	534	aio_req sub;
477		535
478	if (grp->type != REQ_GROUP)	536	if (grp->type != EIO_GROUP)
479	return;	537	return;
480		538
481	SvREFCNT_dec (grp->fh2);	539	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	540	grp->sv2 = 0;
483		541
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	542	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	543	}
487		544
488	static void req_cancel (aio_req req)	545	static void
		546	create_respipe (void)
489	{	547	{
490	req->flags |= FLAG_CANCELLED;	548	if (s_epipe_renew (&respipe))
491		549	croak ("IO::AIO: unable to initialize result pipe");
492	req_cancel_subs (req);
493	}	550	}
494		551
		552	static void poll_wait (void)
		553	{
		554	while (eio_nreqs ())
		555	{
		556	int size;
		557
		558	X_LOCK (reslock);
		559	size = res_queue.size;
		560	X_UNLOCK (reslock);
		561
		562	if (size)
		563	return;
		564
		565	etp_maybe_start_thread ();
		566
		567	s_epipe_wait (&respipe);
		568	}
		569	}
		570
495	static int poll_cb ()	571	static int poll_cb (void)
496	{	572	{
497	dSP;
498	int count = 0;
499	int do_croak = 0;
500	aio_req req;
501
502	for (;;)	573	for (;;)
503	{	574	{
504	LOCK (reslock);	575	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		576
507	if (req)	577	if (res > 0)
508	{
509	if (!res_queue.size)
510	{
511	/* read any signals sent by the worker threads */
512	char buf [32];
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}
516	}
517
518	UNLOCK (reslock);
519
520	if (!req)
521	break;	578	croak (0);
522		579
523	--nreqs;	580	if (!max_outstanding || max_outstanding > eio_nreqs ())
		581	return res;
524		582
525	if (req->type == REQ_QUIT)	583	poll_wait ();
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{
529	req->fd = 1; /* mark request as delayed */
530	continue;
531	}
532	else
533	{
534	if (req->type == REQ_READ)
535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538	SvREADONLY_off (req->data);
539
540	if (req->statdata)
541	{
542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543	PL_laststatval = req->result;
544	PL_statcache = *(req->statdata);
545	}
546
547	req_invoke (req);
548
549	count++;
550	}
551
552	req_free (req);
553	}	584	}
554
555	return count;
556	}	585	}
557		586
558	static void *aio_proc(void *arg);
559
560	static void start_thread (void)	587	static void atfork_child (void)
561	{	588	{
562	sigset_t fullsigset, oldsigset;	589	create_respipe ();
563	pthread_attr_t attr;
564
565	worker *wrk = calloc (1, sizeof (worker));
566
567	if (!wrk)
568	croak ("unable to allocate worker thread data");
569
570	pthread_attr_init (&attr);
571	pthread_attr_setstacksize (&attr, STACKSIZE);
572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574	sigfillset (&fullsigset);
575
576	LOCK (wrklock);
577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578
579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
580	{
581	wrk->prev = &wrk_first;
582	wrk->next = wrk_first.next;
583	wrk_first.next->prev = wrk;
584	wrk_first.next = wrk;
585	started++;
586	}
587	else
588	free (wrk);
589
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);
592	}
593
594	static void req_send (aio_req req)
595	{
596	while (started < wanted && nreqs >= started)
597	start_thread ();
598
599	++nreqs;
600
601	LOCK (reqlock);
602	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);
604	UNLOCK (reqlock);
605	}
606
607	static void end_thread (void)
608	{
609	aio_req req;
610
611	Newz (0, req, 1, aio_cb);
612
613	req->type = REQ_QUIT;
614	req->pri = PRI_MAX + PRI_BIAS;
615
616	req_send (req);
617	}
618
619	static void min_parallel (int nthreads)
620	{
621	if (wanted < nthreads)
622	wanted = nthreads;
623	}
624
625	static void max_parallel (int nthreads)
626	{
627	int cur = started;
628
629	if (wanted > nthreads)
630	wanted = nthreads;
631
632	while (cur > wanted)
633	{
634	end_thread ();
635	cur--;
636	}
637
638	while (started > wanted)
639	{
640	poll_wait ();
641	poll_cb ();
642	}
643	}
644
645	static void create_pipe ()
646	{
647	if (pipe (respipe))
648	croak ("unable to initialize result pipe");
649
650	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
651	croak ("cannot set result pipe to nonblocking mode");
652
653	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
654	croak ("cannot set result pipe to nonblocking mode");
655	}	590	}
656		591
657	/*****************************************************************************/	592	/*****************************************************************************/
658	/* work around various missing functions */
659		593
660	#if !HAVE_PREADWRITE	594	#define MMAP_MAGIC PERL_MAGIC_ext
661	# define pread aio_pread
662	# define pwrite aio_pwrite
663		595
664	/*	596	static int
665	* make our pread/pwrite safe against themselves, but not against	597	mmap_free (pTHX_ SV *sv, MAGIC *mg)
666	* normal read/write by using a mutex. slows down execution a lot,
667	* but that's your problem, not mine.
668	*/
669	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
670
671	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
672	{	598	{
673	ssize_t res;	599	int old_errno = errno;
674	off_t ooffset;	600	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
675
676	LOCK (preadwritelock);
677	ooffset = lseek (fd, 0, SEEK_CUR);
678	lseek (fd, offset, SEEK_SET);
679	res = read (fd, buf, count);
680	lseek (fd, ooffset, SEEK_SET);
681	UNLOCK (preadwritelock);
682
683	return res;
684	}
685
686	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
687	{
688	ssize_t res;
689	off_t ooffset;
690
691	LOCK (preadwritelock);
692	ooffset = lseek (fd, 0, SEEK_CUR);
693	lseek (fd, offset, SEEK_SET);
694	res = write (fd, buf, count);
695	lseek (fd, offset, SEEK_SET);
696	UNLOCK (preadwritelock);
697
698	return res;
699	}
700	#endif
701
702	#if !HAVE_FDATASYNC
703	# define fdatasync fsync
704	#endif
705
706	#if !HAVE_READAHEAD
707	# define readahead aio_readahead
708
709	static ssize_t readahead (int fd, off_t offset, size_t count)
710	{
711	dBUF;
712
713	while (count > 0)
714	{
715	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
716
717	pread (fd, aio_buf, len, offset);
718	offset += len;
719	count -= len;
720	}
721
722	errno = 0;
723	}
724	#endif
725
726	#if !HAVE_READDIR_R
727	# define readdir_r aio_readdir_r
728
729	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
730
731	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
732	{
733	struct dirent *e;
734	int errorno;
735
736	LOCK (readdirlock);
737
738	e = readdir (dirp);
739	errorno = errno;	601	errno = old_errno;
740		602
741	if (e)	603	mg->mg_obj = 0; /* just in case */
742	{
743	*res = ent;
744	strcpy (ent->d_name, e->d_name);
745	}
746	else
747	*res = 0;
748		604
749	UNLOCK (readdirlock);	605	SvREADONLY_off (sv);
		606	SvCUR_set (sv, 0);
		607	SvLEN_set (sv, 0);
		608	SvPVX (sv) = 0;
		609	SvOK_off (sv);
750		610
751	errno = errorno;
752	return e ? 0 : -1;
753	}
754	#endif
755
756	/* sendfile always needs emulation */
757	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
758	{
759	ssize_t res;
760
761	if (!count)
762	return 0;	611	return 0;
763
764	#if HAVE_SENDFILE
765	# if __linux
766	res = sendfile (ofd, ifd, &offset, count);
767
768	# elif __freebsd
769	/*
770	* Of course, the freebsd sendfile is a dire hack with no thoughts
771	* wasted on making it similar to other I/O functions.
772	*/
773	{
774	off_t sbytes;
775	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
776
777	if (res < 0 && sbytes)
778	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
779	res = sbytes;
780	}
781
782	# elif __hpux
783	res = sendfile (ofd, ifd, offset, count, 0, 0);
784
785	# elif __solaris
786	{
787	struct sendfilevec vec;
788	size_t sbytes;
789
790	vec.sfv_fd = ifd;
791	vec.sfv_flag = 0;
792	vec.sfv_off = offset;
793	vec.sfv_len = count;
794
795	res = sendfilev (ofd, &vec, 1, &sbytes);
796
797	if (res < 0 && sbytes)
798	res = sbytes;
799	}
800
801	# endif
802	#else
803	res = -1;
804	errno = ENOSYS;
805	#endif
806
807	if (res < 0
808	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
809	#if __solaris
810	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
811	#endif
812	)
813	)
814	{
815	/* emulate sendfile. this is a major pain in the ass */
816	dBUF;
817
818	res = 0;
819
820	while (count)
821	{
822	ssize_t cnt;
823
824	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
825
826	if (cnt <= 0)
827	{
828	if (cnt && !res) res = -1;
829	break;
830	}
831
832	cnt = write (ofd, aio_buf, cnt);
833
834	if (cnt <= 0)
835	{
836	if (cnt && !res) res = -1;
837	break;
838	}
839
840	offset += cnt;
841	res += cnt;
842	count -= cnt;
843	}
844	}
845
846	return res;
847	}	612	}
848		613
849	/* read a full directory */	614	static MGVTBL mmap_vtbl = {
850	static void scandir_ (aio_req req, worker *self)	615	0, 0, 0, 0, mmap_free
851	{	616	};
852	DIR *dirp;
853	union
854	{
855	struct dirent d;
856	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
857	} *u;
858	struct dirent *entp;
859	char *name, *names;
860	int memlen = 4096;
861	int memofs = 0;
862	int res = 0;
863	int errorno;
864
865	LOCK (wrklock);
866	self->dirp = dirp = opendir (req->dataptr);
867	self->dbuf = u = malloc (sizeof (*u));
868	UNLOCK (wrklock);
869
870	req->data2ptr = names = malloc (memlen);
871
872	if (dirp && u && names)
873	for (;;)
874	{
875	errno = 0;
876	readdir_r (dirp, &u->d, &entp);
877
878	if (!entp)
879	break;
880
881	name = entp->d_name;
882
883	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
884	{
885	int len = strlen (name) + 1;
886
887	res++;
888
889	while (memofs + len > memlen)
890	{
891	memlen *= 2;
892	LOCK (wrklock);
893	req->data2ptr = names = realloc (names, memlen);
894	UNLOCK (wrklock);
895
896	if (!names)
897	break;
898	}
899
900	memcpy (names + memofs, name, len);
901	memofs += len;
902	}
903	}
904
905	if (errno)
906	res = -1;
907
908	req->result = res;
909	}
910		617
911	/*****************************************************************************/	618	/*****************************************************************************/
912		619
913	static void *aio_proc (void *thr_arg)	620	static SV *
		621	get_cb (SV *cb_sv)
914	{	622	{
915	aio_req req;	623	SvGETMAGIC (cb_sv);
916	int type;	624	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
917	worker *self = (worker *)thr_arg;
918
919	do
920	{
921	LOCK (reqlock);
922
923	for (;;)
924	{
925	self->req = req = reqq_shift (&req_queue);
926
927	if (req)
928	break;
929
930	pthread_cond_wait (&reqwait, &reqlock);
931	}
932
933	UNLOCK (reqlock);
934
935	errno = 0; /* strictly unnecessary */
936	type = req->type; /* remember type for QUIT check */
937
938	if (!(req->flags & FLAG_CANCELLED))
939	switch (type)
940	{
941	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
942	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
943
944	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
945	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
946
947	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
948	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
949	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
950
951	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
952	case REQ_CLOSE: req->result = close (req->fd); break;
953	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
954	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
955	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
956	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
957	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
958
959	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
960	case REQ_FSYNC: req->result = fsync (req->fd); break;
961	case REQ_READDIR: scandir_ (req, self); break;
962
963	case REQ_BUSY:
964	{
965	struct timeval tv;
966
967	tv.tv_sec = req->fd;
968	tv.tv_usec = req->fd2;
969
970	req->result = select (0, 0, 0, 0, &tv);
971	}
972
973	case REQ_GROUP:
974	case REQ_NOP:
975	case REQ_QUIT:
976	break;
977
978	default:
979	req->result = ENOSYS;
980	break;
981	}
982
983	req->errorno = errno;
984
985	LOCK (reslock);
986
987	if (!reqq_push (&res_queue, req))
988	/* write a dummy byte to the pipe so fh becomes ready */
989	write (respipe [1], &respipe, 1);
990
991	self->req = 0;
992	worker_clear (self);
993
994	UNLOCK (reslock);
995	}
996	while (type != REQ_QUIT);
997
998	LOCK (wrklock);
999	worker_free (self);
1000	UNLOCK (wrklock);
1001
1002	return 0;
1003	}
1004
1005	/*****************************************************************************/
1006
1007	static void atfork_prepare (void)
1008	{
1009	LOCK (wrklock);
1010	LOCK (reqlock);
1011	LOCK (reslock);
1012	#if !HAVE_PREADWRITE
1013	LOCK (preadwritelock);
1014	#endif
1015	#if !HAVE_READDIR_R
1016	LOCK (readdirlock);
1017	#endif
1018	}
1019
1020	static void atfork_parent (void)
1021	{
1022	#if !HAVE_READDIR_R
1023	UNLOCK (readdirlock);
1024	#endif
1025	#if !HAVE_PREADWRITE
1026	UNLOCK (preadwritelock);
1027	#endif
1028	UNLOCK (reslock);
1029	UNLOCK (reqlock);
1030	UNLOCK (wrklock);
1031	}
1032
1033	static void atfork_child (void)
1034	{
1035	aio_req prv;
1036
1037	while (prv = reqq_shift (&req_queue))
1038	req_free (prv);
1039
1040	while (prv = reqq_shift (&res_queue))
1041	req_free (prv);
1042
1043	while (wrk_first.next != &wrk_first)
1044	{
1045	worker *wrk = wrk_first.next;
1046
1047	if (wrk->req)
1048	req_free (wrk->req);
1049
1050	worker_clear (wrk);
1051	worker_free (wrk);
1052	}
1053
1054	started = 0;
1055	nreqs = 0;
1056
1057	close (respipe [0]);
1058	close (respipe [1]);
1059	create_pipe ();
1060
1061	atfork_parent ();
1062	}	625	}
1063		626
1064	#define dREQ \	627	#define dREQ \
		628	SV *cb_cv; \
1065	aio_req req; \	629	aio_req req; \
1066	int req_pri = next_pri; \	630	int req_pri = next_pri; \
1067	next_pri = DEFAULT_PRI + PRI_BIAS; \	631	next_pri = EIO_PRI_DEFAULT; \
1068	\	632	\
1069	if (SvOK (callback) && !SvROK (callback)) \	633	cb_cv = get_cb (callback); \
1070	croak ("callback must be undef or of reference type"); \
1071	\	634	\
1072	Newz (0, req, 1, aio_cb); \	635	Newz (0, req, 1, eio_req); \
1073	if (!req) \	636	if (!req) \
1074	croak ("out of memory during aio_req allocation"); \	637	croak ("out of memory during eio_req allocation"); \
1075	\	638	\
1076	req->callback = newSVsv (callback); \	639	req->callback = SvREFCNT_inc (cb_cv); \
1077	req->pri = req_pri	640	req->pri = req_pri
1078		641
1079	#define REQ_SEND \	642	#define REQ_SEND \
		643	PUTBACK; \
1080	req_send (req); \	644	req_submit (req); \
		645	SPAGAIN; \
1081	\	646	\
1082	if (GIMME_V != G_VOID) \	647	if (GIMME_V != G_VOID) \
1083	XPUSHs (req_sv (req, AIO_REQ_KLASS));	648	XPUSHs (req_sv (req, aio_req_stash));
1084		649
1085	MODULE = IO::AIO PACKAGE = IO::AIO	650	MODULE = IO::AIO PACKAGE = IO::AIO
1086		651
1087	PROTOTYPES: ENABLE	652	PROTOTYPES: ENABLE
1088		653
1089	BOOT:	654	BOOT:
1090	{	655	{
		656	static const struct {
		657	const char *name;
		658	IV iv;
		659	} *civ, const_iv[] = {
		660	# define const_niv(name, value) { # name, (IV) value },
		661	# define const_iv(name) { # name, (IV) name },
		662	# define const_eio(name) { # name, (IV) EIO_ ## name },
		663	const_iv (EXDEV)
		664	const_iv (ENOSYS)
		665	const_iv (O_RDONLY)
		666	const_iv (O_WRONLY)
		667	const_iv (O_CREAT)
		668	const_iv (O_TRUNC)
		669	#ifndef _WIN32
		670	const_iv (S_IFIFO)
		671	#endif
		672	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		673	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		674	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		675	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		676	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		677	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		678
		679	const_iv (ST_RDONLY)
		680	const_iv (ST_NOSUID)
		681	const_iv (ST_NODEV)
		682	const_iv (ST_NOEXEC)
		683	const_iv (ST_SYNCHRONOUS)
		684	const_iv (ST_MANDLOCK)
		685	const_iv (ST_WRITE)
		686	const_iv (ST_APPEND)
		687	const_iv (ST_IMMUTABLE)
		688	const_iv (ST_NOATIME)
		689	const_iv (ST_NODIRATIME)
		690	const_iv (ST_RELATIME)
		691
		692	const_iv (PROT_EXEC)
		693	const_iv (PROT_NONE)
		694	const_iv (PROT_READ)
		695	const_iv (PROT_WRITE)
		696
		697	/*const_iv (MAP_FIXED)*/
		698	const_iv (MAP_PRIVATE)
		699	const_iv (MAP_SHARED)
		700	const_iv (MAP_ANONYMOUS)
		701
		702	/* linuxish */
		703	const_iv (MAP_HUGETLB)
		704	const_iv (MAP_LOCKED)
		705	const_iv (MAP_NORESERVE)
		706	const_iv (MAP_POPULATE)
		707	const_iv (MAP_NONBLOCK)
		708
		709	const_iv (MCL_FUTURE)
		710	const_iv (MCL_CURRENT)
		711
		712	const_eio (MS_ASYNC)
		713	const_eio (MS_INVALIDATE)
		714	const_eio (MS_SYNC)
		715
		716	const_eio (MT_MODIFY)
		717
		718	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		719	const_eio (SYNC_FILE_RANGE_WRITE)
		720	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		721
		722	const_eio (READDIR_DENTS)
		723	const_eio (READDIR_DIRS_FIRST)
		724	const_eio (READDIR_STAT_ORDER)
		725	const_eio (READDIR_FOUND_UNKNOWN)
		726
		727	const_eio (DT_UNKNOWN)
		728	const_eio (DT_FIFO)
		729	const_eio (DT_CHR)
		730	const_eio (DT_DIR)
		731	const_eio (DT_BLK)
		732	const_eio (DT_REG)
		733	const_eio (DT_LNK)
		734	const_eio (DT_SOCK)
		735	const_eio (DT_WHT)
		736	};
		737
1091	HV *stash = gv_stashpv ("IO::AIO", 1);	738	aio_stash = gv_stashpv ("IO::AIO" , 1);
1092	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	739	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1093	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	740	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1094	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1095		741
		742	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		743	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		744
		745	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		746
1096	create_pipe ();	747	create_respipe ();
1097	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1098	}
1099		748
		749	if (eio_init (want_poll, done_poll) < 0)
		750	croak ("IO::AIO: unable to initialise eio library");
		751
		752	/* atfork child called in fifo order, so before eio's handler */
		753	X_THREAD_ATFORK (0, 0, atfork_child);
		754	}
		755
1100	void	756	void
1101	min_parallel (nthreads)	757	max_poll_reqs (int nreqs)
1102	int nthreads
1103	PROTOTYPE: $	758	PROTOTYPE: $
		759	CODE:
		760	eio_set_max_poll_reqs (nreqs);
1104		761
1105	void	762	void
1106	max_parallel (nthreads)	763	max_poll_time (double nseconds)
1107	int nthreads
1108	PROTOTYPE: $	764	PROTOTYPE: $
		765	CODE:
		766	eio_set_max_poll_time (nseconds);
1109		767
1110	void	768	void
		769	min_parallel (int nthreads)
		770	PROTOTYPE: $
		771	CODE:
		772	eio_set_min_parallel (nthreads);
		773
		774	void
		775	max_parallel (int nthreads)
		776	PROTOTYPE: $
		777	CODE:
		778	eio_set_max_parallel (nthreads);
		779
		780	void
		781	max_idle (int nthreads)
		782	PROTOTYPE: $
		783	CODE:
		784	eio_set_max_idle (nthreads);
		785
		786	void
		787	max_outstanding (int maxreqs)
		788	PROTOTYPE: $
		789	CODE:
		790	max_outstanding = maxreqs;
		791
		792	void
1111	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	793	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1112	SV * pathname
1113	int flags
1114	int mode
1115	SV * callback
1116	PROTOTYPE: $$$;$	794	PROTOTYPE: $$$;$
1117	PPCODE:	795	PPCODE:
1118	{	796	{
1119	dREQ;	797	dREQ;
1120		798
1121	req->type = REQ_OPEN;	799	req->type = EIO_OPEN;
1122	req->data = newSVsv (pathname);	800	req->sv1 = newSVsv (pathname);
1123	req->dataptr = SvPVbyte_nolen (req->data);	801	req->ptr1 = SvPVbyte_nolen (req->sv1);
1124	req->fd = flags;	802	req->int1 = flags;
1125	req->mode = mode;	803	req->int2 = mode;
1126		804
1127	REQ_SEND;	805	REQ_SEND;
1128	}	806	}
1129		807
1130	void	808	void
1131	aio_close (fh,callback=&PL_sv_undef)	809	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1132	SV * fh
1133	SV * callback
1134	PROTOTYPE: $;$	810	PROTOTYPE: $;$
1135	ALIAS:	811	ALIAS:
1136	aio_close = REQ_CLOSE
1137	aio_fsync = REQ_FSYNC	812	aio_fsync = EIO_FSYNC
1138	aio_fdatasync = REQ_FDATASYNC	813	aio_fdatasync = EIO_FDATASYNC
1139	PPCODE:	814	PPCODE:
1140	{	815	{
		816	int fd = s_fileno_croak (fh, 0);
1141	dREQ;	817	dREQ;
1142		818
1143	req->type = ix;	819	req->type = ix;
1144	req->fh = newSVsv (fh);	820	req->sv1 = newSVsv (fh);
1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	821	req->int1 = fd;
1146		822
1147	REQ_SEND (req);	823	REQ_SEND (req);
1148	}	824	}
1149		825
1150	void	826	void
		827	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		828	PROTOTYPE: $$$$;$
		829	PPCODE:
		830	{
		831	int fd = s_fileno_croak (fh, 0);
		832	dREQ;
		833
		834	req->type = EIO_SYNC_FILE_RANGE;
		835	req->sv1 = newSVsv (fh);
		836	req->int1 = fd;
		837	req->offs = offset;
		838	req->size = nbytes;
		839	req->int2 = flags;
		840
		841	REQ_SEND (req);
		842	}
		843
		844	void
		845	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		846	PROTOTYPE: $;$
		847	PPCODE:
		848	{
		849	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		850	int fd = s_fileno_croak (fh, 0);
		851	dREQ;
		852
		853	if (close_pipe < 0)
		854	{
		855	int pipefd [2];
		856
		857	if (pipe (pipefd) < 0
		858	|| close (pipefd [1]) < 0
		859	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		860	abort (); /*D*/
		861
		862	close_pipe = pipefd [0];
		863	}
		864
		865	req->type = EIO_DUP2;
		866	req->int1 = close_pipe;
		867	req->sv2 = newSVsv (fh);
		868	req->int2 = fd;
		869
		870	REQ_SEND (req);
		871	}
		872
		873	void
1151	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	874	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1152	SV * fh
1153	UV offset
1154	UV length
1155	SV * data
1156	UV dataoffset
1157	SV * callback
1158	ALIAS:	875	ALIAS:
1159	aio_read = REQ_READ	876	aio_read = EIO_READ
1160	aio_write = REQ_WRITE	877	aio_write = EIO_WRITE
1161	PROTOTYPE: $$$$$;$	878	PROTOTYPE: $$$$$;$
1162	PPCODE:	879	PPCODE:
1163	{	880	{
1164	aio_req req;
1165	STRLEN svlen;	881	STRLEN svlen;
		882	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1166	char *svptr = SvPVbyte (data, svlen);	883	char *svptr = SvPVbyte (data, svlen);
1167		884	UV len = SvUV (length);
1168	SvUPGRADE (data, SVt_PV);
1169	SvPOK_on (data);
1170		885
1171	if (dataoffset < 0)	886	if (dataoffset < 0)
1172	dataoffset += svlen;	887	dataoffset += svlen;
1173		888
1174	if (dataoffset < 0 || dataoffset > svlen)	889	if (dataoffset < 0 || dataoffset > svlen)
1175	croak ("data offset outside of string");	890	croak ("dataoffset outside of data scalar");
1176		891
1177	if (ix == REQ_WRITE)	892	if (ix == EIO_WRITE)
1178	{	893	{
1179	/* write: check length and adjust. */	894	/* write: check length and adjust. */
1180	if (length < 0 || length + dataoffset > svlen)	895	if (!SvOK (length) || len + dataoffset > svlen)
1181	length = svlen - dataoffset;	896	len = svlen - dataoffset;
1182	}	897	}
1183	else	898	else
1184	{	899	{
1185	/* read: grow scalar as necessary */	900	/* read: check type and grow scalar as necessary */
		901	SvUPGRADE (data, SVt_PV);
1186	svptr = SvGROW (data, length + dataoffset);	902	svptr = SvGROW (data, len + dataoffset + 1);
1187	}	903	}
1188
1189	if (length < 0)
1190	croak ("length must not be negative");
1191		904
1192	{	905	{
1193	dREQ;	906	dREQ;
1194		907
1195	req->type = ix;	908	req->type = ix;
1196	req->fh = newSVsv (fh);	909	req->sv1 = newSVsv (fh);
1197	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	910	req->int1 = fd;
1198	: IoOFP (sv_2io (fh)));	911	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1199	req->offset = offset;	912	req->size = len;
1200	req->length = length;
1201	req->data = SvREFCNT_inc (data);	913	req->sv2 = SvREFCNT_inc (data);
1202	req->dataptr = (char *)svptr + dataoffset;	914	req->ptr2 = (char *)svptr + dataoffset;
		915	req->stroffset = dataoffset;
1203		916
1204	if (!SvREADONLY (data))	917	if (!SvREADONLY (data))
1205	{	918	{
1206	SvREADONLY_on (data);	919	SvREADONLY_on (data);
1207	req->data2ptr = (void *)data;	920	req->flags |= FLAG_SV2_RO_OFF;
1208	}	921	}
1209		922
1210	REQ_SEND;	923	REQ_SEND;
1211	}	924	}
1212	}	925	}
1213		926
1214	void	927	void
		928	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		929	PROTOTYPE: $$;$
		930	PPCODE:
		931	{
		932	SV *data;
		933	dREQ;
		934
		935	req->type = EIO_READLINK;
		936	req->sv1 = newSVsv (path);
		937	req->ptr1 = SvPVbyte_nolen (req->sv1);
		938
		939	REQ_SEND;
		940	}
		941
		942	void
1215	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	943	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1216	SV * out_fh
1217	SV * in_fh
1218	UV in_offset
1219	UV length
1220	SV * callback
1221	PROTOTYPE: $$$$;$	944	PROTOTYPE: $$$$;$
1222	PPCODE:	945	PPCODE:
1223	{	946	{
		947	int ifd = s_fileno_croak (in_fh , 0);
		948	int ofd = s_fileno_croak (out_fh, 1);
1224	dREQ;	949	dREQ;
1225		950
1226	req->type = REQ_SENDFILE;	951	req->type = EIO_SENDFILE;
1227	req->fh = newSVsv (out_fh);	952	req->sv1 = newSVsv (out_fh);
1228	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	953	req->int1 = ofd;
1229	req->fh2 = newSVsv (in_fh);	954	req->sv2 = newSVsv (in_fh);
1230	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	955	req->int2 = ifd;
1231	req->offset = in_offset;	956	req->offs = in_offset;
1232	req->length = length;	957	req->size = length;
1233		958
1234	REQ_SEND;	959	REQ_SEND;
1235	}	960	}
1236		961
1237	void	962	void
1238	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	963	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1239	SV * fh
1240	UV offset
1241	IV length
1242	SV * callback
1243	PROTOTYPE: $$$;$	964	PROTOTYPE: $$$;$
1244	PPCODE:	965	PPCODE:
1245	{	966	{
		967	int fd = s_fileno_croak (fh, 0);
1246	dREQ;	968	dREQ;
1247		969
1248	req->type = REQ_READAHEAD;	970	req->type = EIO_READAHEAD;
1249	req->fh = newSVsv (fh);	971	req->sv1 = newSVsv (fh);
1250	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	972	req->int1 = fd;
1251	req->offset = offset;	973	req->offs = offset;
1252	req->length = length;	974	req->size = length;
1253		975
1254	REQ_SEND;	976	REQ_SEND;
1255	}	977	}
1256		978
1257	void	979	void
1258	aio_stat (fh_or_path,callback=&PL_sv_undef)	980	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1259	SV * fh_or_path
1260	SV * callback
1261	ALIAS:	981	ALIAS:
1262	aio_stat = REQ_STAT	982	aio_stat = EIO_STAT
1263	aio_lstat = REQ_LSTAT	983	aio_lstat = EIO_LSTAT
		984	aio_statvfs = EIO_STATVFS
1264	PPCODE:	985	PPCODE:
1265	{	986	{
1266	dREQ;	987	dREQ;
1267		988
1268	New (0, req->statdata, 1, Stat_t);	989	req->sv1 = newSVsv (fh_or_path);
1269	if (!req->statdata)
1270	{
1271	req_free (req);
1272	croak ("out of memory during aio_req->statdata allocation");
1273	}
1274		990
1275	if (SvPOK (fh_or_path))	991	if (SvPOK (req->sv1))
1276	{	992	{
1277	req->type = ix;	993	req->type = ix;
1278	req->data = newSVsv (fh_or_path);
1279	req->dataptr = SvPVbyte_nolen (req->data);	994	req->ptr1 = SvPVbyte_nolen (req->sv1);
1280	}	995	}
1281	else	996	else
1282	{	997	{
1283	req->type = REQ_FSTAT;	998	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1284	req->fh = newSVsv (fh_or_path);
1285	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	999	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1286	}	1000	}
1287		1001
1288	REQ_SEND;	1002	REQ_SEND;
1289	}	1003	}
1290		1004
1291	void	1005	void
		1006	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1007	PPCODE:
		1008	{
		1009	dREQ;
		1010
		1011	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1012	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1013	req->sv1 = newSVsv (fh_or_path);
		1014
		1015	if (SvPOK (req->sv1))
		1016	{
		1017	req->type = EIO_UTIME;
		1018	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1019	}
		1020	else
		1021	{
		1022	req->type = EIO_FUTIME;
		1023	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1024	}
		1025
		1026	REQ_SEND;
		1027	}
		1028
		1029	void
		1030	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1031	PPCODE:
		1032	{
		1033	dREQ;
		1034
		1035	req->sv1 = newSVsv (fh_or_path);
		1036	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1037
		1038	if (SvPOK (req->sv1))
		1039	{
		1040	req->type = EIO_TRUNCATE;
		1041	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1042	}
		1043	else
		1044	{
		1045	req->type = EIO_FTRUNCATE;
		1046	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1047	}
		1048
		1049	REQ_SEND;
		1050	}
		1051
		1052	void
		1053	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1054	ALIAS:
		1055	aio_chmod = EIO_CHMOD
		1056	aio_mkdir = EIO_MKDIR
		1057	PPCODE:
		1058	{
		1059	dREQ;
		1060
		1061	req->int2 = mode;
		1062	req->sv1 = newSVsv (fh_or_path);
		1063
		1064	if (SvPOK (req->sv1))
		1065	{
		1066	req->type = ix;
		1067	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1068	}
		1069	else
		1070	{
		1071	req->type = EIO_FCHMOD;
		1072	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1073	}
		1074
		1075	REQ_SEND;
		1076	}
		1077
		1078	void
		1079	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1080	PPCODE:
		1081	{
		1082	dREQ;
		1083
		1084	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1085	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1086	req->sv1 = newSVsv (fh_or_path);
		1087
		1088	if (SvPOK (req->sv1))
		1089	{
		1090	req->type = EIO_CHOWN;
		1091	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1092	}
		1093	else
		1094	{
		1095	req->type = EIO_FCHOWN;
		1096	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1097	}
		1098
		1099	REQ_SEND;
		1100	}
		1101
		1102	void
		1103	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1104	PPCODE:
		1105	{
		1106	dREQ;
		1107
		1108	req->type = EIO_READDIR;
		1109	req->sv1 = newSVsv (pathname);
		1110	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1111	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1112
		1113	if (flags & EIO_READDIR_DENTS)
		1114	req->int1 |= EIO_READDIR_CUSTOM2;
		1115
		1116	REQ_SEND;
		1117	}
		1118
		1119	void
1292	aio_unlink (pathname,callback=&PL_sv_undef)	1120	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1293	SV * pathname
1294	SV * callback
1295	ALIAS:	1121	ALIAS:
1296	aio_unlink = REQ_UNLINK	1122	aio_unlink = EIO_UNLINK
1297	aio_rmdir = REQ_RMDIR	1123	aio_rmdir = EIO_RMDIR
1298	aio_readdir = REQ_READDIR	1124	aio_readdir = EIO_READDIR
1299	PPCODE:	1125	PPCODE:
1300	{	1126	{
1301	dREQ;	1127	dREQ;
1302		1128
1303	req->type = ix;	1129	req->type = ix;
1304	req->data = newSVsv (pathname);	1130	req->sv1 = newSVsv (pathname);
1305	req->dataptr = SvPVbyte_nolen (req->data);	1131	req->ptr1 = SvPVbyte_nolen (req->sv1);
1306		1132
1307	REQ_SEND;	1133	REQ_SEND;
1308	}	1134	}
1309		1135
1310	void	1136	void
1311	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1137	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1312	SV * oldpath
1313	SV * newpath
1314	SV * callback
1315	ALIAS:	1138	ALIAS:
1316	aio_link = REQ_LINK	1139	aio_link = EIO_LINK
1317	aio_symlink = REQ_SYMLINK	1140	aio_symlink = EIO_SYMLINK
1318	aio_rename = REQ_RENAME	1141	aio_rename = EIO_RENAME
1319	PPCODE:	1142	PPCODE:
1320	{	1143	{
1321	dREQ;	1144	dREQ;
1322		1145
1323	req->type = ix;	1146	req->type = ix;
1324	req->fh = newSVsv (oldpath);	1147	req->sv1 = newSVsv (oldpath);
1325	req->data2ptr = SvPVbyte_nolen (req->fh);	1148	req->ptr1 = SvPVbyte_nolen (req->sv1);
1326	req->data = newSVsv (newpath);	1149	req->sv2 = newSVsv (newpath);
1327	req->dataptr = SvPVbyte_nolen (req->data);	1150	req->ptr2 = SvPVbyte_nolen (req->sv2);
1328		1151
1329	REQ_SEND;	1152	REQ_SEND;
1330	}	1153	}
1331		1154
1332	void	1155	void
1333	aio_busy (delay,callback=&PL_sv_undef)	1156	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1334	double delay
1335	SV * callback
1336	PPCODE:	1157	PPCODE:
1337	{	1158	{
1338	dREQ;	1159	dREQ;
1339		1160
1340	req->type = REQ_BUSY;	1161	req->type = EIO_MKNOD;
1341	req->fd = delay < 0. ? 0 : delay;	1162	req->sv1 = newSVsv (pathname);
1342	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1163	req->ptr1 = SvPVbyte_nolen (req->sv1);
1343		1164	req->int2 = (mode_t)mode;
		1165	req->offs = dev;
		1166
1344	REQ_SEND;	1167	REQ_SEND;
1345	}	1168	}
1346		1169
1347	void	1170	void
		1171	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1172	ALIAS:
		1173	aio_mtouch = EIO_MTOUCH
		1174	aio_msync = EIO_MSYNC
		1175	PROTOTYPE: $$$$;$
		1176	PPCODE:
		1177	{
		1178	STRLEN svlen;
		1179	UV len = SvUV (length);
		1180	char *svptr = SvPVbyte (data, svlen);
		1181
		1182	if (offset < 0)
		1183	offset += svlen;
		1184
		1185	if (offset < 0 || offset > svlen)
		1186	croak ("offset outside of scalar");
		1187
		1188	if (!SvOK (length) || len + offset > svlen)
		1189	len = svlen - offset;
		1190
		1191	{
		1192	dREQ;
		1193
		1194	req->type = ix;
		1195	req->size = len;
		1196	req->sv2 = SvREFCNT_inc (data);
		1197	req->ptr2 = (char *)svptr + offset;
		1198	req->int1 = flags;
		1199
		1200	REQ_SEND;
		1201	}
		1202	}
		1203
		1204	void
		1205	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1206	PPCODE:
		1207	{
		1208	dREQ;
		1209
		1210	req->type = EIO_BUSY;
		1211	req->nv1 = delay < 0. ? 0. : delay;
		1212
		1213	REQ_SEND;
		1214	}
		1215
		1216	void
1348	aio_group (callback=&PL_sv_undef)	1217	aio_group (SV *callback=&PL_sv_undef)
1349	SV * callback
1350	PROTOTYPE: ;$	1218	PROTOTYPE: ;$
1351	PPCODE:	1219	PPCODE:
1352	{	1220	{
1353	dREQ;	1221	dREQ;
1354		1222
1355	req->type = REQ_GROUP;	1223	req->type = EIO_GROUP;
		1224
1356	req_send (req);	1225	req_submit (req);
1357
1358	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1226	XPUSHs (req_sv (req, aio_grp_stash));
1359	}	1227	}
1360		1228
1361	void	1229	void
1362	aio_nop (callback=&PL_sv_undef)	1230	aio_nop (SV *callback=&PL_sv_undef)
1363	SV * callback	1231	ALIAS:
		1232	aio_nop = EIO_NOP
		1233	aio_sync = EIO_SYNC
1364	PPCODE:	1234	PPCODE:
1365	{	1235	{
1366	dREQ;	1236	dREQ;
1367		1237
1368	req->type = REQ_NOP;	1238	req->type = ix;
1369		1239
1370	REQ_SEND;	1240	REQ_SEND;
1371	}	1241	}
1372		1242
1373	void	1243	int
1374	aioreq_pri (int pri = DEFAULT_PRI)	1244	aioreq_pri (int pri = 0)
1375	CODE:	1245	PROTOTYPE: ;$
		1246	CODE:
		1247	RETVAL = next_pri;
		1248	if (items > 0)
		1249	{
1376	if (pri < PRI_MIN) pri = PRI_MIN;	1250	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1377	if (pri > PRI_MAX) pri = PRI_MAX;	1251	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1378	next_pri = pri + PRI_BIAS;	1252	next_pri = pri;
		1253	}
		1254	OUTPUT:
		1255	RETVAL
1379		1256
1380	void	1257	void
1381	aioreq_nice (int nice = 0)	1258	aioreq_nice (int nice = 0)
1382	CODE:	1259	CODE:
1383	nice = next_pri - nice;	1260	nice = next_pri - nice;
1384	if (nice < PRI_MIN) nice = PRI_MIN;	1261	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1385	if (nice > PRI_MAX) nice = PRI_MAX;	1262	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1386	next_pri = nice + PRI_BIAS;	1263	next_pri = nice;
1387		1264
1388	void	1265	void
1389	flush ()	1266	flush ()
1390	PROTOTYPE:	1267	PROTOTYPE:
1391	CODE:	1268	CODE:
1392	while (nreqs)	1269	while (eio_nreqs ())
1393	{	1270	{
1394	poll_wait ();	1271	poll_wait ();
1395	poll_cb ();	1272	poll_cb ();
1396	}	1273	}
1397		1274
1398	void	1275	int
1399	poll()	1276	poll()
1400	PROTOTYPE:	1277	PROTOTYPE:
1401	CODE:	1278	CODE:
1402	if (nreqs)
1403	{
1404	poll_wait ();	1279	poll_wait ();
1405	poll_cb ();	1280	RETVAL = poll_cb ();
1406	}	1281	OUTPUT:
		1282	RETVAL
1407		1283
1408	int	1284	int
1409	poll_fileno()	1285	poll_fileno()
1410	PROTOTYPE:	1286	PROTOTYPE:
1411	CODE:	1287	CODE:
1412	RETVAL = respipe [0];	1288	RETVAL = s_epipe_fd (&respipe);
1413	OUTPUT:	1289	OUTPUT:
1414	RETVAL	1290	RETVAL
1415		1291
1416	int	1292	int
1417	poll_cb(...)	1293	poll_cb(...)
…		…
1423		1299
1424	void	1300	void
1425	poll_wait()	1301	poll_wait()
1426	PROTOTYPE:	1302	PROTOTYPE:
1427	CODE:	1303	CODE:
1428	if (nreqs)
1429	poll_wait ();	1304	poll_wait ();
1430		1305
1431	int	1306	int
1432	nreqs()	1307	nreqs()
1433	PROTOTYPE:	1308	PROTOTYPE:
1434	CODE:	1309	CODE:
1435	RETVAL = nreqs;	1310	RETVAL = eio_nreqs ();
1436	OUTPUT:	1311	OUTPUT:
1437	RETVAL	1312	RETVAL
1438		1313
		1314	int
		1315	nready()
		1316	PROTOTYPE:
		1317	CODE:
		1318	RETVAL = eio_nready ();
		1319	OUTPUT:
		1320	RETVAL
		1321
		1322	int
		1323	npending()
		1324	PROTOTYPE:
		1325	CODE:
		1326	RETVAL = eio_npending ();
		1327	OUTPUT:
		1328	RETVAL
		1329
		1330	int
		1331	nthreads()
		1332	PROTOTYPE:
		1333	CODE:
		1334	RETVAL = eio_nthreads ();
		1335	OUTPUT:
		1336	RETVAL
		1337
		1338	int
		1339	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1340	PROTOTYPE: $$$$
		1341	CODE:
		1342	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1343	RETVAL = posix_fadvise (fh, offset, length, advice);
		1344	#else
		1345	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1346	#endif
		1347	OUTPUT:
		1348	RETVAL
		1349
		1350	ssize_t
		1351	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1352	PROTOTYPE: $$$$
		1353	CODE:
		1354	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1355	OUTPUT:
		1356	RETVAL
		1357
		1358	void
		1359	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1360	PROTOTYPE: $$$$$;$
		1361	PPCODE:
		1362	sv_unmagic (scalar, MMAP_MAGIC);
		1363	{
		1364	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1365	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1366	if (addr == (void *)-1)
		1367	XSRETURN_NO;
		1368
		1369	/* we store the length in mg_obj, as namlen is I32 :/ */
		1370	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1371	->mg_obj = (SV *)length;
		1372
		1373	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1374	if (!(prot & PROT_WRITE))
		1375	SvREADONLY_on (scalar);
		1376
		1377	SvPVX (scalar) = (char *)addr;
		1378	SvCUR_set (scalar, length);
		1379	SvLEN_set (scalar, 0);
		1380	SvPOK_only (scalar);
		1381
		1382	XSRETURN_YES;
		1383	}
		1384
		1385	void
		1386	munmap (SV *scalar)
		1387	PROTOTYPE: $
		1388	CODE:
		1389	sv_unmagic (scalar, MMAP_MAGIC);
		1390
		1391	int
		1392	mlockall (int flags)
		1393	PROTOTYPE: $
		1394	CODE:
		1395	#if _POSIX_MEMLOCK
		1396	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1397	extern int mallopt (int, int);
		1398	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1399	#endif
		1400	mlockall (flags);
		1401	#else
		1402	RETVAL = -1;
		1403	errno = ENOSYS;
		1404	#endif
		1405	OUTPUT:
		1406	RETVAL
		1407
		1408	int
		1409	munlockall ()
		1410	PROTOTYPE:
		1411	CODE:
		1412	#if _POSIX_MEMLOCK
		1413	munlockall ();
		1414	#else
		1415	RETVAL = -1;
		1416	errno = ENOSYS;
		1417	#endif
		1418	OUTPUT:
		1419	RETVAL
		1420
		1421	void _on_next_submit (SV *cb)
		1422	CODE:
		1423	SvREFCNT_dec (on_next_submit);
		1424	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1425
1439	PROTOTYPES: DISABLE	1426	PROTOTYPES: DISABLE
1440		1427
1441	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1428	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1442		1429
1443	void	1430	void
1444	cancel (aio_req_ornot req)	1431	cancel (aio_req_ornot req)
1445	CODE:	1432	CODE:
1446	req_cancel (req);	1433	eio_cancel (req);
1447		1434
1448	void	1435	void
1449	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1436	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1450	CODE:	1437	PPCODE:
		1438	{
		1439	if (GIMME_V != G_VOID)
		1440	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1441
		1442	if (items > 1)
		1443	{
		1444	SV *cb_cv =get_cb (callback);
		1445
1451	SvREFCNT_dec (req->callback);	1446	SvREFCNT_dec (req->callback);
1452	req->callback = newSVsv (callback);	1447	req->callback = SvREFCNT_inc (cb_cv);
		1448	}
		1449	}
1453		1450
1454	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1451	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1455		1452
1456	void	1453	void
1457	add (aio_req grp, ...)	1454	add (aio_req grp, ...)
1458	PPCODE:	1455	PPCODE:
1459	{	1456	{
1460	int i;	1457	int i;
1461	aio_req req;
1462		1458
1463	if (grp->fd == 2)	1459	if (grp->int1 == 2)
1464	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1460	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1465		1461
1466	for (i = 1; i < items; ++i )	1462	for (i = 1; i < items; ++i )
1467	{	1463	{
		1464	aio_req req;
		1465
1468	if (GIMME_V != G_VOID)	1466	if (GIMME_V != G_VOID)
1469	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1467	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1470		1468
1471	req = SvAIO_REQ (ST (i));	1469	req = SvAIO_REQ (ST (i));
1472		1470
1473	if (req)	1471	if (req)
1474	{	1472	eio_grp_add (grp, req);
1475	++grp->length;
1476	req->grp = grp;
1477
1478	req->grp_prev = 0;
1479	req->grp_next = grp->grp_first;
1480
1481	if (grp->grp_first)
1482	grp->grp_first->grp_prev = req;
1483
1484	grp->grp_first = req;
1485	}
1486	}	1473	}
1487	}	1474	}
1488		1475
1489	void	1476	void
1490	cancel_subs (aio_req_ornot req)	1477	cancel_subs (aio_req_ornot req)
…		…
1494	void	1481	void
1495	result (aio_req grp, ...)	1482	result (aio_req grp, ...)
1496	CODE:	1483	CODE:
1497	{	1484	{
1498	int i;	1485	int i;
		1486	AV *av;
		1487
		1488	grp->errorno = errno;
		1489
1499	AV *av = newAV ();	1490	av = newAV ();
		1491	av_extend (av, items - 1);
1500		1492
1501	for (i = 1; i < items; ++i )	1493	for (i = 1; i < items; ++i )
1502	av_push (av, newSVsv (ST (i)));	1494	av_push (av, newSVsv (ST (i)));
1503		1495
1504	SvREFCNT_dec (grp->data);	1496	SvREFCNT_dec (grp->sv1);
1505	grp->data = (SV *)av;	1497	grp->sv1 = (SV *)av;
1506	}	1498	}
		1499
		1500	void
		1501	errno (aio_req grp, int errorno = errno)
		1502	CODE:
		1503	grp->errorno = errorno;
1507		1504
1508	void	1505	void
1509	limit (aio_req grp, int limit)	1506	limit (aio_req grp, int limit)
1510	CODE:	1507	CODE:
1511	grp->fd2 = limit;	1508	eio_grp_limit (grp, limit);
1512	aio_grp_feed (grp);
1513		1509
1514	void	1510	void
1515	feed (aio_req grp, SV *callback=&PL_sv_undef)	1511	feed (aio_req grp, SV *callback=&PL_sv_undef)
1516	CODE:	1512	CODE:
1517	{	1513	{
1518	SvREFCNT_dec (grp->fh2);	1514	SvREFCNT_dec (grp->sv2);
1519	grp->fh2 = newSVsv (callback);	1515	grp->sv2 = newSVsv (callback);
		1516	grp->feed = aio_grp_feed;
1520		1517
1521	if (grp->fd2 <= 0)	1518	if (grp->int2 <= 0)
1522	grp->fd2 = 2;	1519	grp->int2 = 2;
1523		1520
1524	aio_grp_feed (grp);	1521	eio_grp_limit (grp, grp->int2);
1525	}	1522	}
1526		1523

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